Improvement in connecting spirit-levels and straight-edges



G. RALPH. Connecting Spirit-Level and Str night-Edge.

Patented Oct 26,1875.

WITN :55 E5= 2 N- FEW-R5. PHOTO-LITHOGRAFHER. WASHINGTON,

UNITED STATES PATENT Orrron.

JAMES G. RALPH, OF AURORA, ILLINOIS.

IMPROVEMENT IN CONNECTING SPIRIT-LEVELS AND STRAlGHT-EDGES.

Specification forming part of Letters Patent No. 169,290, dated October26, 1875; application filed August 21, 1875.

To all whom it may concern Be it known that I, JAMES G. RALPH, ofAurora, in the county of Kane, and in the State of Illinois, haveinvented certain new and useful Improvements on Attachments forGonnecting together Spirit-Levels and Straight- Edges; and do herebydeclare that the fol-' lowing is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawing, making a partof this specifi. cation, in which- Figure 1 is a perspective view of aspiritlevel and straight-edge combined by means of my improved device,and Fig. 2 is a like view of said parts separate from each other.

Letters of like name and kind refer to like parts in each of thefigures.

The design of my invention is to enable a spirit-level to be easily andsecurely combined with a straight-edge, to which end it consists in themeans employed for connecting together said parts, substantially as andfor the purpose hereinafter specified.

In the annexed drawings, A represents a spirit-level, and B astraight-edge, both of usual form and construction. Upon or within theback edge b of the straight-edge B, at one side of its longitudinalcenter, is secured a metal rod, 0, which extends outward at a rightangle therewith, and has its end bent inward upon a line parallel tosaid edge, and within a threaded opening in said end is provided with aset-screw, D. At a suitable point upon the opposite side of thelongitudinal center of the straight-edge B from the rod 0 is a metalstrap, E, which, at its ends, is

pivoted to or upon the sides of said straightedge, extends upward to aheight corresponding to the height of said rod, and, like the latter, isprovided with a set-screw, E, which extends inward through a threadedopening that is formed in the outer end of said strap.

The spirit-level A is now placed upon the straight-edge, one end beingcontained within the strap E, while its opposite end is in contact withthe inner side of the stud (J, and beneath the bent end of the same,after which, by turning inward upon the screws D and F, saidspirit-level will be firmly secured to or upon said straight-edge.

In order to prevent the points of the screws JAMES G. RALPH.

Witnesses GEO. S. PRINDLE, J. B. GALLAN. I

